Rails 3.1 dynamic nested forms

I tried following the RailsCasts example to开发者_运维知识库 get dynamic forms to work but couldn't get it working right. Basically I have a Project that has_many tasks and I want to be able to dynamically add and remove tasks when creating or editing a project. How can I do this?

Use Ryan Bate's gem directly.

It lies here with documentation. BTW the documentation precisely describes your use case.

Apneadiving is right, but it doesn't really help the new guy.

This is only for ruby on rails 3.1 and probably for 3.2 but I haven't tested it.

If you add the following to your Application_root/app/assets/javascripts/application.js file (I added it to the last line):

//= require jquery_nested_form

a fresh one looks as follows

// This is a manifest file that'll be compiled into including all the files listed below.
// Add new JavaScript/Coffee code in separate files in this directory and they'll automatically
// be included in the compiled file accessible from http://example.com/assets/application.js
// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
// the compiled file.
//
//= require jquery
//= require jquery_ujs
//= require_tree .
//= require jquery_nested_form   

Or if you are for some reason using prototype:

// This is a manifest file that'll be compiled into including all the files listed below.
// Add new JavaScript/Coffee code in separate files in this directory and they'll automatically
// be included in the compiled file accessible from http://example.com/assets/application.js
// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
// the compiled file.
//
//= require jquery
//= require jquery_ujs
//= require_tree .
//= require prototype_nested_form